High temperature and low pressure bath



April 19, 1938.. I B TSUMURA 2,114,408

HIGH TEMPERATRE AND LOW PRESSURE BATH Filed June 27, 1956 A TTORNEYS.

Patented Apr. 19, 1938 UNITED STATES PATENT OFFIQE Bunjiro Tsumura,Shibuya-ku, Tokyo, Japan Application June 27, 1936, Serial No. 87,793 InJapan July 3, 1935 2 Claims.

This invention relates to a high temperature and low pressure bath,which consists in providing an airtight tub with a heating device andair exhaust. The object thereof is to obtain a bath capable of inducingperspiration and also removing the sweat quickly by maintaining theinterior of the tub at a high temperature and under low pressure.

Referring to the accompanying drawing,

Figure l is a perspective View of the bath according to the presentinvention, showing its interior by cutting away parts of the tub and lidand Figure 2, a perspective view of a modified tub in use, having aexible shutter.

In the drawing, l is a tub with a lid 2; 3, a round hole made in thefront surface of the lid 2; and 4, a rubber-coated cloth with its outerperiphery secured to the round hole and also with a round hole 4 at thecenter, said round hole 4 having a tightening rubber band around itsrim. 5 is a packing surrounding the back of the lid; and 6 and 1, amanometer and thermometer respectively. A and B are an air supply pipeand air exhaust pipe respectively which are attached to the tub l andconnected with a suitable air supply and exhaust devices respectively.They are also provided with cocks A', A and B', B respectively. C is anelectric heater; and D, a metal pipe containing the cord of said heater.D and D are switches. 8 is a seat disposed at one side in the tub I,whose height may be regulated.

Figure 2 shows a modification according to the present invention inwhich the lid is composed of a exible shutter controllable from insideby the user.

The following is the manner of using this inventionz- Firstly, turn thecocks A" and B and the switch D" to the position in which they can passa gas and electric current; and the cocks A and B and the switch D tothe opposite position. Sit down in the seat 8 in the tub I and spreadingthe round hole 4', put out your head from it and then flt the lid 2tightly to the tub by pulling a handle 9. Next, discharge the air fromthe tub by opening the cock B' and at the same time feed a gascontaining high temperature air, steam or suitable chemical from thepipe A by opening the cock A'. When the air in the tub has beensubstituted by the gas fed from the pipe A, close the cock A and at the'same time turn the switch D' to transmit the current to the electricheater C. When the pressure in the tub has been lowered suitably,closethe cock B and when the temperature has been raised suitably,switch off, and the interior of the tub will be maintained at a hightemperature and under low pressure, thus inducing perspiration. 'I'hesweat evaporates immediately to accelerate the next perspiration. Inthis way, it is possible to obtain delightful and refreshed feeling, andmore remarkable effect may be obtained by using a chemical. In thiscase, the object may be attained simply by putting a volatile chemicalin the tub instead of using the air supply pipe. Now, the hot feelingreceived by the skin is not only caused by the temperature of the gas,but also is influenced by its pressurel considerably. That is to say,under low pressure comparatively little heat is felt. Accordingly, thisinvention has the advantage of inducing perspiration without giving hotfeeling even if a comparatively high temperature is used. When the usercannot carry out the above operation personally, the tub may be given ahigh temperature and low pressure by previously turning the cocks A andB and the switch D' to the position in which they pass a gas andelectric current and then operating the cocks A" and B and the switch Dfrom outside by another person.

In the above explanation,the electric heater is shown as a heatingdevice, but it is needless to say that a furnace or the like also may beused.

I claim:

1. A high temperature and low pressure bath of the character described,comprising an airtight tub, the top of the tub being provided with anopening, a exible annular member arranged in said opening, said memberbeing adapted to embrace the neck of the occupant of the tub, an airsupply conduit for supplying air to interior of said tub, an exhaustconduit for exhausting the interior of said tub, means interio-rly ofsaid tub for controlling each of said conduits, means exteriorly of saidtub for controlling each of said conduits, and heating means within saidtub for maintaining said interior at a high temperature, whereby thebody of the occupant may be subjected to a high temperature and lowpressure.

2. A high temperature and low pressure bath of the character described,comprising an airtight tub, the top of the tub being provided with anopening, a flexible annular member arranged in said opening, said memberbeing adapted resiliently and tightly to embrace the neck of theoccupant of the tub, an airsupply conduit for supplying air to interiorof said tub, an exhaust conduit for exhausting the interior of said tub,means interiorly of said tub for controlling each of said conduits,means exteriorly of said tub for controlling each of said conduits, andheating means within said tub for maintaining said interior at a hightemperature, whereby the body of the occupant may be subjected to a hightemperature and low pressure, said tub being further provided with aflexible closure operable from within.

BUNJIRO TSUMURA.

